Booking core machine



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A. LIENZ BOOKING CORE MACHINE Filed Ocl'.. EL, 1952@ ifi hwtwheeb RNULULEWZ BOOKING CORE MACHINE Filed 0G11. 23., 1925 I5 Sheets'Shee; 5

S14/@anims Awww m2 Patented Aug. 7, 1928.

. UNITE ARNOLD Lanz,

Tron,

D STATES PATENT OFFICES OF SAGINAW, MICHIGAN, ASBIGNOR T0 GENERAL MOTORSCORPORA- n OF DETROIT, MICHIGAN, A CORPORATION OF DELAWARE BOOKING COREMACHINE.

Application led October 21, 1925. Serial No. 64,038.

This invention relates to a booking core machine.

practice has been to In making cores the common shape two half cores,

bake these half cores and then unite the halves to make a complete core.

Consider able labor is required in grinding and matching the core halvesto make invention it is made possible By the present to save this labor.formed and' united the finished core is a complete core.

Two half cores are before baking, so that made without the secondarystep of grinding the half cores to lit.

To that end there paratus by which the formed and united ranged to beremoved, whereupon,

pleted core is ready For a fuller unde tion the following ing drawings.

has been invented an aptwo half cores are and the core boxes arthe comtobe baked. Y

rstanding of the invendescription is given, 1n which reference 1s madeto the accompany-` In the drawings, Figure 1, is a plan view of theapparatus,

Figures 4 to 9,

inclusive, are sectional views, showing diagrammatically, the suc-ycessive steps 1n the 'operation of the machine.

Figure 10 illustrates a and `Figure 11 illustrates the elevation.

Referring now to detail in plan view same 1n end the drawing, numeral 1l represents a main platform or base, supported upon pedest-als as at 3.The base 1s provided at its opposite ends with horizontal bearingmembers 5. base 1s a rollover table bers 9 in alignment base.

swing in. vertical plane connection with the base, 4 secured to therollover table through bearing 5.

Associated with the 7, having end memwith bearings 5 of the The rollovertable is mounted to by means of pivot there being a shaft 7 y passingRotating with the rollover table, in a position beyond one end of thebase, is a handle This handle has to the shaft 4 as sh ll. a hub portion6 keyed own in Figure 3. This handle carries a locking lever 12, pivotedat 13 and to one end of the lever is locking pin 14, engaging openings15 and 15" equal distance from the rollover table.

pivoted a through one of two in the base member at the axis of rotationof The lever is held in its of the cross member 45 locking position by aspring 17, seated between the handle and one end of the locking lever. f

I Carried by the rollover table at its front side and at equal distancesfrom its middle port1on, are tubular guides 19, through which areslidably mounted spindles 2l. Clamping arms 22 are rotatably mountedupon a reduced part at the upper ends ofthe spindles 21, and theseclamping arms carry pivoted equalizers as at 24 for engaging the top ofthe core box as described herelnafter. The two spindles 21 are connectedby a cross bar 23,` the ends of which are split and clamped about thespindles by bolts 25 as is extended vertically through the cross bar andpivoted centrally in the slot is the upper end of a push rod 29.

A bell crank lever 37 provided with a handle 39 is pivoted at 41 on theend of a horiaontal rod 42 shown in Figure 1 as carried by the rollovertable 7. The bell crank lever has a verticalr arm extending below itspivot 41 and the lower end of this arm is connected to the lower end ofa push rod 29 at 30. A pair of latches 33 pivoted to the rollover tableat 5H engage pins 36 on a front core box. The latches are linkedtogether by a connecting rod 31 and are operated by a lever 32.

The parts just described operate as folows:

As the bell crank is swung about its pivot the lower end of the push rod29 is raised from the position shown in Figure 2. The

shown in Figure 1. A slot 27, i

lower end 30 of rod 29 swings upwardly about pivot 41 as a center. Thecross bar 23 andl spindles 21 are thus lifted, the spindles 21 slidingthrough the guides 19. Reverse movement of the bell crank brings downthe cross bar 23 and the spindles. If desired a spring 34 may beconnected to these parts to assist in holding the cross bar and spindlesin position.

Also carried by the rollover table are two pairs of pivot lugs 43. Thelugs of each pair pivotally carry between them lugs 45 carrying thefront core box 47, the core box normally resting on the rollover tableand being locked thereto by the latches described above.

The second mating core box 49 is carried by a cross bar 51, any suitablefastening means bein used to mount the core box on the bar. nwardly fromeach end the cross bar 51 is formed with a pivot eye 8. The two eyescooperate with two other eyes 10 at the ends of an underlying cross bar63. By means of the pivotal connection at 8 and 10, bar 51 with the rearcore b ox 49 maybe swung from its rearmost position as in Figures 1 and3 to an upward position or to-a forward position as shown for example inFigure 4 and in Figure 5. Theunderlying cross bar 63 is not xed inposition relative to the base butis vertically movable relative to thebase so that its vertical movement raises or lowers the pivotallyconnected cross bar 51 and with it the rear comI box. On the undersideof the ends of cross bar 63 there are openings 64 which openings receivethe upper ends of the rods 53, said rods 53 being mounted to slidevertically in. the base. Rods 53 may be secured in openings 64 by setscrews 66. To operate these push rods 53 they are clamped beneath thebase to a cross bar 55 by means of bolts 57. Connecting links` 58 extendfrom the cross bar 55 to the inner ends of arms 59 fixed to a rock shaft60 mounted in the pedestals. The rock shaft is actuated by the pedal 61.

The cross bar 63 `serves to provide the pivoted mounting for bar 51carrying the rear core box, it serves to provide the attachment for thelifting means by which the bar 51 and the rear core box is raised; andit serves as a support for the rear core box when the latter is swungabout its pivot to its rearward position shown in Fig. 6.

The operation is best explained by reference to Figures 3 to 9.

With the two core boxes lying face up, as in Figure 3, the front corebox resting on the rollover table and the rear core box resting on thecross bar 63.and the base, the material for the core is packed andtamped into each core box. If the shape of the cavity of the core box issuch that the second hali core box may bc swung through 180 to theposition shown in Figure 5, the second half core box may be so swung.However, if the cavity is of such shape that the material is likely toslip out the pivots of both core boxes are taken advantage of and thetwo core boxes are rotated to the position shown by Figure 4, afterwhich the two contacting core boxes are swung from the position ofFigure 4 to that o f Figure 5. The clamp arms are then swung from theposition shown in Figure 4 to that shown by Figure 5 and are thenbrought down by the action of the bell crank to exert pressure upon thepair of core boxes now resting on the rollover table. Figure 5 shows theparts in this position.

y any convenient tapping means, such means forming no part of thisinvention, the machine is jarred to loosen the upper half 0f the corefrom the second core box. The

Vmamaria rying the pivots for cross bar 51 and the second core box andthis second core box is then swung to the dotted line position as shownin Figure 6.

For the purpose of baking the core it is placed in a furnace restingupon a metal frame. This frame is shaped to correspond withthe cavity ofthe half core boxes and is lplaced upon the core as is shown in FigureThe arms are once more swung around and brought down, this time upon themetal frame. The operator then releases the latch on the handle 11 andturns the rollover table through 180, thus inverting the rst core box.This inverted position is shown in Figure 8. The machine is given asecond jarring motion, the clampin arms are loweredfrom the position ofigure 8 to that of Figure 9 thus separating the first core box from thecore and leavin the completed core supported by the meta frame restinupon the inverted clamp arms. l frame carrying the complete core is nowbelieved to be the best embodiment of the invention but that variouschanges and modifications may be made which may fall within the terms ofthe claims.

What I claim and desire to protect by Letters Patent is: A

1. In a core making machine a. base, a

a core-box carried by the rollover table, means aociated with the basetable to invert the rollover table and core box.

In a core making table mounted tion, a core over table is in normalposition.

3. In a core making machine, core box mounted to be inverted position, asecond core box on t e base so as to be mated with core box when thefirst core box is mal position.

In a core making machine a base, a core box, mounted to be inverted fromits normal position, a second core box mounted on the base, so as to bemated with the lirst core box when the first core box is in normalposition and also to be raised from its normal position to permit thereversal of the first core box.

5. A booking core machine comprising a base, a first core box, a secondcore box, a pivot for the second core box whereby it may be swung intoposition over the rst core box, and a pivotal connection, whereby thefirst core box may be independently swung to an inverted position,

mounted the first in norment, means lill (lll

`frame and the clamp,

6. A booking core machine comprising a base, a first core box, a secondcore box, pivots for each core box whereby the core boxes may be swunginto face to' 'face contact, a pivotal connection whereby the first corebox may be independently swung to an in verted osition.

7. A ooking core machine comprising a base, a first core box, a secondcore box, pivots for swinging the core boxes into face to face contact,means for bodily lifting the second core box and pivotal means toindependently swing the Iirst core box to an inverted position.

8. A booking core machine comprising a base, a core box, a second corebox, means :tor swinging the core boxes into engagefor clamping theboxes together to make the completed core, means for bodily lifting thesecond core box, other pivotal means to independently swing the rst corebox into an inverted position.

9. A booking core machine comprising a base, a core box, a second corebox, means for bringing the core boxes together to make a complete core,means for clamping the boxes together to complete the union of the halfcores, means for bodily lifting the second core box, a frame or coreholder` to relace the second core box, pivotal means for ringing to aninverted position as a unit, the rst core box, the completed core, themeans for lowering the clamp whereby the first core box will beseparated from the core now carried by the frame.

10. A booking core machine, comprising a base, a member carried by thebase u on a horizontal pivotal connection, a core ox carried by saidmember, a vertically adjustable member carrying, by a horizontal pivotalconnection, a second core box, adjustable means carried by said memberfor clamping the boxes together in the normal position and forseparating the core from the first core box in the inverted position.

11. In a booking core machinea first core box, a second core box, amember to which said second core box is pivoted, means for raising themember and its core box, consisting of a rock shaft carried bythemachine, means to rock the shaft and linkage between the rockshaftand the member.

12. In a booking core machine a base, a rollover table, on the base, afirst core table, a second core box upon the rollover box mounted, to beplaced in inverted position upon the first core box, clamps carried bythe rollover table and vertically adjustable to clamp the two 'coreboxes together and manually operated means to actuate the clamps.

1.3. In a core making machine, a base, a rollover table, pivoted to thebase to swlng in a vertical plane, a core box carried by the verticallyy carried by a horizontal pivot` rollover table, reci rocating clamp-scarried by the rollover -tab e to engage the core box and means toreciprocate the clamps.

14. ,In a booking core machine, a base, a rollover table pivoted to thebase to swing in a vertical plane, a first core box, carried by therollover table, a second core box `mounted to be inverted over the firstcore box, guides on the rollover` table, vertically reciprocating rodscarried by the guides, clamping arms swinging horizontally mounted onthe upper ends of the rods and means to reciprocate the rods.

15. In a booking core machine, rollover table, a first core box on thetable, a second core box mounted to be placed over a base, a

the rst core box, vertically reciprocating a rods carried by the table,clamps carried by the rods to hold the core boxes together, a cross barclamped to the reciprocating rods, a push rod pivoted to the cross bar,a bell crank lever pivoted to the rollover table, one of its armsconnected to the push rod to actuate the reciprocating rodsv and clampthe arms. Y

16. In a booking core machine, a base, a rollover table, a core box,pivoted to the rollover table to swing vertically, the rollover tablepivoted to the base to swing vertically and carry the core box to aninverted position.

17. In a booking core machine, a base, a rollover table, a core boxpivoted to the rollover table to swing vertically, a latch pivoted tothe rollover table and engaging a pin on the core box, a lever toactuate the latch, a pivotal connection between the base and rollovertable whereby the latter may be 1nverted.

18. In a booking core machine, a base, a rollover table, a core boxpivoted to the roll over table to swing vertically, the rollover tablepivoted to the base, also to swing vertically and carrying with it thecore box, a handle rigid with the rollover table to rotate the same, anda locking latch associated with the handle toV lock the rollover tableto the base in upright position and in inverted position.

19. In a booking core machine, a. base, a rst core box, a second corebox, means to bring the second core box into face to face contact withthe first core box, means to remove the second core box from the core,means to invert the first core box with the core, means to separate thefirst core box from the core. A

20. In a booking core machine, a base, a first core box, a second corebox, means to unite the core boxes and complete the core, means toremove the second core box from the core, a frame shaped to fit the coreand to be substituted for the second core box, means to invert the firstcore box with the core, means to separate the rst core box l0 ahgnment.

22. In a booking core machine, a base, a rollover table pivoted thereto,'a core box carried by the rollover table, a second core box mounted soas to be brought into face to face contact with the first core box andlimeans to rai-se the second core box from the rst.

In testimony whereof I affix my signature.

ARNOLD LENZ.

